Pshetsylvaijia



June 19, 1928.

- Re. 16,9 98 LE ROY P. CLUTTER OPERATING MECHANISM FOR EXCAVATORBUCKETS I Original Filed Feb. 9, 1923 2 Sheets-Sheet 1 Snow/x4501 Le RoyF. Clutter attorney June 19, 1928.

Re. 16,998 LE ROY P. CLUTTER OPERATING MECHANISM FOR EXCAVATOR BUCKETSOriginal Filed Feb. a, 1923 2 Sheets-Sheet 2 ahuanfoz Le Roy P-Cluttgraw C 7 i a iJMTEnJ STATES. PATENT omen,

Reissued June 19, 1928.

Re. lasts n ROY :P. CLUTTER, OEWASHINGTON, renn sirnvnme; AssI Non orONE- THIRD TO GEORGE E. WAGNER, OF'BEAVEIEtFAL-LS, rnmes mmnrn,.ANDQONE-THIBD 1:0 mm) c. CLUTTERQF wAsnINGToir, rnmrsynvan n v v yornna'rme M onAmsM magnum: UcK ii'rsl;

Original no. 1,526,774, dated This invention relates to certain new anduseful improvements in operating mechanism for grab buckets, such asthevclam shell and orange peel' types, adapted for use in connection withpower excavators and loz iders. l f The primary objects of tlieinvention are to provide an apparatus of the class stated, whichincludes a carrier vertically shiftable in the free end of the boom ofthe power apparatus and constructed to be connected to the boom so thatthe Weight of the boom may be utilized to forceithe bucket member intothe material to be conveyed, thereby assuring a full loadat all tnnesandnconsequcnce expeditingl'the work and reducing the cost of attendinglabor to minimum; which will be easily and Conveniently filled anddumped at any position; which pr"oides novel means for verticallyshifting the carrier in the boomfen'd; which includes a bucket memberpivotally connected to the carrier to allow its partial rotation therebypermitting of its adjustment toadapt itself to scoop upmaterialsdisposed in any manner. l Further important objects of. thisinvention are to provide a device of the type stated in amanner ashereinafter set forth, Which is simple in its construction andarrangement, strong, durable and elhcient in its use. substantial,compact andquick-act ing and comparatively inexpensive to manufacture.

\Vith the foregoing and other objects in viexv, which will. appear asthe description proceeds, the invention resides in the combi-vnationandarrangement of parts and in th e details of construction.hereinafter described and claimed. it being understood that changes inthe precise embodiment herein disclosed can be made Without departingfrom the principleof'the invention, which appended.

In the drawings forming alportion of this specification andfivhereinlikenumerals of reference designate correspondingparts throughout theseveralviews Figure 1 is a sifde elevation ofa bucket come withinthescope of the claims hereunto and operatingmechanism for'flpov'v'er'eiicava tors and 'loaders in; accordance with this:

vention, q Figure-2 isa front vievv' thereofl i A Figure 3 is a top planviev v of the gu de blockcarriedatthe forward endof the boom.-

Figure 4 is a view ure3. I I y Z l igiu'e 5 is an enlarged detailperspective view of associated parts forming the attachment'o f thebucket with'the carrier. Fiarure 6 is a sectional side view'of thebucket'attachment'elements. r l Renter-ring in detailtothe drawingl' and2 denotef respective bucket members ofthe clam shell type,"having theupper ends (if adjoining side walls hingedly connected Jtogether by atransversely disposed shaft '3';

A hanger 4 is mounted on the shaft 3 and carries the pulley rotatablymounted there- Eaclrout'er corner of the bucket [members 1 and2ispivotally attached to' a pair of v hanger arms 6 and 7 by'a commonconnect ingpin 8. The hanger armsf6 at each side the bucket members 1and Q have their upper converging ends pi'votallyconne'cted torespective sides of a swivel block 9, on integrally formed lateralprojections 10.

lheblock 9 is swivelly connected in a spacer i 11 fixedly mountedbetweenthe-lower endof a carrier 12.

The; hanger arms than tl iehang'rer arms 6. The hanger arms on lineIVIV, Tia" I 7 are of greater length 'Fat each side of the bucketmembers 1 and 2 have their upper ends pivotally connected torespectivesides of atrans'ver'se-bar 1 3 by me oi pins 14. I The bar 13*extends throunhand is fixed in a vertieally disposed searing 15 and hasupper'and lower'reduce d ends '15" which are plvoted in respectivebear'i brackets 16 secured intermediate of the carrier 12. withclearance 16', to also allo'wa slight vertical movemntof the bearig v r1 i the; I hep ivoted, connections of the hanger arms 6 and 7 togetherwith the clearance provided for the lattereallolw their move ment topermit. of theopening and closing I of the bucket members'l and 2,during the dumping and filling operations.

I A guide block 17 is pivotally mounted as at'17. adjacent to theforward'end of the I boom 18 and provides a guide for the carrier v 12extending therethrough. The boom 18 is pivoted on frame (not shown) andis I adapted to be raisedor lowered during excavating operations bycable 27' operated in a known manne z The-carrier'l-2 includes twomembers spaced relatively to each other aspacer 1'9 positionedbetweenthe upper end .of the carrier members 12:

A lock 20. is pivotally connected,*as at 2 1, tothe' rear end of the.guide block 17.- and carries a pair of forwardly projecting latches 22,fixedto the lower endthereof; .-An angularly. disposed and dependingoperating arm 23 is fixed toand counterbalances the lock; and itsdisposition normally causes the lock 20 to swing forwardly by gravity,against the carrier 12. i

The inner edges of the carrier members .12 are formed-with a pluralityof notches 24', which extend along the upper portion thereof, and 'aplurality of notches are also formed on the inner edges of the carriermembers 12 arrangedalongthe lower portion {thereon The notches 24' arearranged in pairs, that is, a notch 24 on one of the {carrier members 12is transversely "aligned with a 1correspondingj'notch24 on the other ofsaid carriermembers 12. The

notches 25 at the lowerportion of-the carastraightupper wall and acurved lower operation ofthe cable 27. After the bucket I lock 20.

rier 12are similarly positioned. I

Itwill be noted that the notches 25 have wallpwhile the notches 24 arereversed having 'astraightlower wall and a curved upper .wall. Thisformation of the notches 24 and 25 is provided to permit of their-properengagement by the latches 22 carried the Wheat-he upper'end o f thecarrier-12 lowered into engagement with the boom 18,

the latches 22 willjbe inengagement with a pair of the notches 24, andowing to their formation the weight of the boom '18'may'be applied to vthe-carrier. forcing the bucket membersl and 2 into the'material to beconveyed.

man pulation of the line 26 'seeured to theylower end .oi the operatingarm 23 the latches are released from the notches 24 and thebucketl-elevatedto the boom 18 by the al as beenelevated the latches,will automaticallyengage-ina pair of notches '25,,and

- maintain,the bucket in such elevated position while the latter isconveyed and .dumped by the releaseofthe cable 27. a

. Thus a rigid connector is provided hetweenthe boom, and-,the bucket,to facilitate diggingat great, depths, .which connector is,'however,shiftable-to carrythe bucket up to the boom, thus providing a highdumping elevation. v

After the dumping operation the latches 22 are released from the notches25 by a pull on the line 26, allowing the vertical shifting of thecarrier in the guide block 17. The'bucket members land 2 are actuatedby'th'e operation of the cable 27. 'The latter passes fromitsoperatingdrum (not shown) over the sheave 28, rotatably mounted on the boom l8,around the pulley 5 and has its the forward end of end secured, as at 29to the boom 13. 4 v a The bucket members 1 and 2, dueto theirconstruction. and hinged connection, normally shiftto the open position,when the cable 27 is slacked. The bucket is filled by drawing themembers land 2 to the closed position, such, closing operation beingaccomplished by winding the cable 27 upon its drum. The cable 27 .isheldtaut until the bucket has been conveyed to the dumping position. Upon.release of the cable 27 the bucket members 1 and'2 will automaticallyopen and discharge the contents thereof.

. During the filling operation the weight of the boom 18 may be thrownupon the bucket whilethe cable 27 is operating to draw'the members 1and2 to the closed position thereby assuring a more nearly capacity loadat all times. The pivotal connections of the hanger armsfiand 7 with thebucket permit of the partial rotation of the latter to allow for its,adjustment to scoop up a full load regardless of the position ofmaterials in which it is operating.

i What I claim is I" 1. An operating mechanism forexcavator inc grabbuckets comprisinga bucket carrier, f

being shiftable lengthwisein the outer end of the boomof the excavator,said boom and a carrier having inter-engaging means for utilizing theweight of the boom on. the bucket tofacilitatethe fillingof the bucket,said inter-engaging means including'a shiftable member. v

3. An operating mechanism for excavator grab buckets. comprising abucket carrier, meanjs'for swi'vellyconnecting a bucket tothePlowerendand intermediate the ends of saidcarrier" at two pointsthereof, said car- .rierbeingshiftable lengthwise in the outer end ofthe boom of the excavator, said boom and carrier having inter-engagingmeans for utilizing the Weight of the boom on the bucket to facilitatethe filling of the bucket, said inter-engaging means including ashiftable member. a r

4. An "operating mechanism for excavator grab buckets comprising abucket carrier, means for swivellv connecting a bucket therewith, saidcarrier being shiftable lengthwise in the end of the boom of theexcavator, said boom and carrier halving inter-engaging means forutilizing. the weight of the boom on the bucket to facilitate thefilling of the bucket, said interengaging means including a shiftablememher, said member being counter-balanced and an operating element forsaid member to selectively position the same with respect tothe carrier.n

5. An operating mechanism for excavator grabbuckets comprising a bucketcarrier, means for swivelly connecting a bucket thereto at two pointsthereon, said carrier being. shiftable lengthwise in the end of the boomof the excavator, said boom and carrier having inter-engaging means forutilizthe weight of the boom on the bucket to facilitate the filling ofthe bucket, said, inter-engaging means including a. shiftable member,said member being counter-balanced, and on operating element for saidmember .to selectively. position the same with respect to the carrier.

6; An operating mechanism for excavator grab buckets comprising a bucketcarrier, means for swivelly connecting a bucket to the lower end andintermediate of the ends ofsaid carrier at two points thereon, saidcarrier shiftable lengthwise in the end of the boom of the excavator,said boom and carrier having inter-engaging means .for utilizing theweight of the boom on the bucket. to facilitate the filling of thebucket, said inter-engaging means including a shiftable member, saidmember counter-balanced, and an operating element for said member toselectively position the same with respect to the carrier.

7. An. operating mechanism for excavator grab buckets comprising bucketcarrier, four pairs of hanger arms adapted to be con.- nected at theirlower ends to the bucket,

ethe arms of twopairs being of lcss'length than. the arms of the other't-Wopai'rs, super posed swivel elements for connecting said armswvithsaid iarrier, said carrier being shiftablo lengthwise in the end of theboom of the excavator. said. boom and carrier having inter-engagingmeansior utilizing the weight of theboom on the bucket to facilitate thefilling of the bucket, said inter-engaging means including a shiftahlemember.

8. An operating mechanism for excavator grab buckets comprising a bucketcarrier, four pairs of hanger arms adapted to be connected at theirlower ends'to the bucket,

the arms ottwo pairs being of less length than the arms of the other twopairs, superposed swivel elements for connecting said arms to saidcarrier, saidcarrier being shiftable lengthwise in the end of the boomof theexcavator, said boom and carrier having inter'engaging means forutilizing the weight or the boom on the bucket to facilitate thefillingof the bucket, said interengaging means including a shi...ablemeniher, and an operating element for said memberto selectively positionthe same with respect to the carrier. 4

v 9. An operating mechanism for. excavator grab buckets comprising abucket carrier, four-pairs of swivelled elements depending from saidcarrier for connecting a bucketthereto,- two pairs of said elementsextending above the other, said carrier being shiftable lengthwise ofthe boom of the excavator, and means for positioning the carrier atdiii'erent points with respect to the ends of the boom for utilizing theweight of the boom onthe bucket to facilitate the filling thereof.

1O. An operating mechanism for excavator grab buckets comprising abucket carrier, four pairs of swivelled elementsv depending from said,carrier for connecting a bucket therewith, two pairs of said elementsex:- tending above the other. said carrier being shiftable lengthwise ofthe boom of the excavator, and means for positioning the car,-

,rier at difierent points with respect to the end of the boom forutilizing the weight of the boom on the bucket tofacilitate the fillingthereof, an operating element for said means for selectively positioningthesame, and operating means for the boom.

11. An operating mechanism'for the purpose set forth comprising avertically disposed carrier shittable length-wise in the outer end ofthe boom of the excavator, means for detachably connecting the boom tothe carrier at different points throughout the length of the latter,superposed swiveldevices secured to the carrier, and two pairs of buckethanger arms connected to each of said devicesp' i .12. An operatingmechanism for the purpose set forth comprising a vertically disposedcarrier, shiftable lengthwise in the outer end. of the boom of theexcavator, means for. detachablv connecting the boom to the carrier atdi'lferent points throughout the length ofthe latter, superposedswiveldevices secured to the carrier, and two pairs of bucket hangerarms connected to each of said devices, operating means for the boom,

and meanst'or elevating the carrier with respect to the boom. I

13. An operating mechanism for the purpose set forth comprising abucket, a carrier,

hanger arms for the bucket, means for lll) swivelly connecting said armsto the carrier, said carrier being shiftable lengthwise in the outer endof the boom of the excavator, and means for connecting the boom to thecarrier at different points with respect to the length of the latter.

14. An operating mechanism for the purpose set forth comprising abucket, a carrier,

hanger arms for the bucket, means for swivelly connecting said arms tothe carrier at its ends and intermediate its ends, said carrier beingshiftable lengthwise in the outer end of the boom of the excavator, and

' means for detachably connectingthe carrier to the boom at differentpoints on the carrier.

15. An operating mechanism for the purpose set forth comprising abucket, a carrier, hanger arms for the bucket, means for swivellyconnecting said arms to. the carrier, said carrier being shiftablelengthwise in the boom of the excavator, and means for detachablyconnecting the boom to the carrier at different points with respect tothe length of the latter, operating means for said boom for transportingthe bucket to and from dumping position, and an operating element forthe means for detachably connecting theboom with the carrier.

16. An operating mechanism for the purpose set forth, comprising abucket, a carrier, hanger arms for the bucket, means for swivellyconnecting said arms to the carrier atits-ends and intermediate of itsends, said carrier being shiftable lengthwise in the boom of theexcavator, and means for detachably connecting the boom to the carrierat different points with respect to the length of the latter, operatingmeans for said boom for transporting the bucket to and from dumpingposition, and an operating element for the means for detachablyconnecting the boom with the carrier. v.

17. An operating mechanism for the purpose set forth comprising thecombination with a scoop of the grab bucket type anda boom shiftedcarrier provided with a pair of superposed swivel devices, of two pairsswivel device at swivel device intermediate its ends, a scoop,

of hanger arms extended upwardly fro-m the scoop and connected to one ofthe said devices, and two pairs of hanger arms extended upwardly fromthe scoop and connected to th other of said devices.

18. An operating mechanism for the purpose set forth comprisingavertically disposed shiftable carrier provided with a its lower end anda two pairs of hanger arms extended upward- ]y from the scoop andpivotallyconnected to said lower swivel device and two pairs of hangerarms extended upwardly from the scoop and pivotally connected to the upaper swiveldevice.

posed shiftable carrier having one side thereof provided with two setsof superposed notches with the notches of each set arranged in transversalignmentwith respect to the carrier, a scoop suspension means dependingfrom the carrier, said carrier being shiftable lengthwise of the boomand means carried by the boom and engageable with the notches of one setfor utilizing the weight of the boom to facilitate the filling operationof the scoop and engageable in the other set provided for maintainingthe scoop in elevated position during the dumping operation. r a i 20.An operating mechanism for the purpose set forth comprising a verticallydisposed shift-able carrier having one side thereof provided with twosets of superposed notches, with the notches of-each set arrangedintransvcrse alinement with respect to the carrier, the notches of oneset being oppositely disposed with respectto the notches of the otherset, a scoop suspension means depending from the carrier, said carrierbeing shiftable lengthwise of the boom, and means carried by the boomand engage- ,able with the notches of one set for utilizing the weightof the boom to facilitate the filling-operation of the scoop andengageable in the other set for maintaining the scoop in the elevatedposition during the dumping operation, an operating element for saidmeans. and means for shifting the boom. 1

21. 'An operating mechanism for the purpose set forth comprising avertically disposed shiftable carrier having one side thereof providedwith two sets of superposed notches with the notches of each setarranged in transverse alinement with respect to the carrier, thenotches of one set being oppositely disposed with respect to the notchesof the other set, a scoop suspension means depending from the carrier,said carrier shiftable lengthwise of the boom, and means carried by the.boom and engageable with the notches of one set for utilizing theweightof the boom to facilitate th filling operation of the scoop andengageable in the other set for maintaining the scoop in elevatedposition during the dumping operation, and

llii

means connected with the scoop and boom for elevating the carrier.

LE I ROY P. 'C'LUTTER.

